The Spartan Precision Equipment Heavy Duty Optics Adapter with Carbon Rod turns your Sentinel or Davros head into a super stable optics and camera platform in seconds. The magnetic attachment system gives instant fitting and has an adjustable lever system for extra security. Lightweight and durable, the Heavy Duty Optics Adapter comes with a standard 1/4"-20 camera/optic screw, 3/8"-16 bushing and polymer plate.FeaturesCNC machined from 7075-T7351 aluminium billet with a hard-anodised black finishDesigned to attach to cameras and other optics with standard 3/8"-16 or 1/4"-20 threaded female mounting pointsIncludes a carbon control arm for fine control